LM3444 MR16 Boost Reference Design for Non-Dimming & Dimming LED Applications
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
See the Important Notice and Disclaimer covering reference designs and other TI resources.
- LM3444 MR16 Boost Reference Design User Guide (Rev. A)
(PDF 1436 KB)
13 Feb 2012
This reference design was based on the released LM3444 IC from National Semiconductor.
This design was developed to minimize the current spikes coming out of an electronic transformer to less than 5A, which is a typical transformer rating, when driving an LED MR16 circuit. The off the shelf LED MR16 solutions exhibit spikes that significantly exceed a transformer's maximum rated output current which will degrade the reliability of the transformer and reduce its operating lifetime.
This design generates a continuous LED current when a 220uF 35V electrolytic capacitor is placed across the output. The circuit operates in a constant output power mode. The output power is fixed at about 6W.
- Tested with Electronic Transformers (12VAC output)
- Work with off the shelf dimmers with no flicker, stable operation
- Flicker-free operation with common Electronic Low Voltage dimmers, and Electronic Transformers